This has been Pakistan’s modus operandi over the last decade or so.
A case in point is Guangdong Hongda, the company that developed this missile is primarily a Chinese mining company.
Pakistan often purchases off-the-shelf missiles and drones from private Chinese firms — most of these products are neither used by the PLA nor widely exported internationally.
These systems are then rebranded as Fateh, Nasr, Faaz, Burraq, Shahpar, etc., and presented as indigenously developed products of GIDS, NESCOM, etc. to fool the common people.